Celtic Calendar

Use this calendar to convert between The Celtic Tree Calendar and the Standard Roman Calendar.

The Celtic months: Birch, Rowan, Ash, Alder, Willow, Hawthorn, Oak, Holly, Hazel, Bramble, Ivy, Reed and Elder fit the Roman Calendar and travel through time on the same cycles. This makes many numerological calculations relatively straight forward. It also allows easy conversion of Celtic Festival dates.

Celtic Date Roman Date Celtic Date Roman Date Celtic Date Roman Date
1 Birch 24 December 1 Hawthorn 13 May 1 Ivy 30 September
2 Birch 25 December 2 Hawthorn 14 May 2 Ivy 1 October
3 Birch 26 December 3 Hawthorn 15 May 3 Ivy 2 October
4 Birch 27 December 4 Hawthorn 16 May 4 Ivy 3 October
5 Birch 28 December 5 Hawthorn 17 May 5 Ivy 4 October
6 Birch 29 December 6 Hawthorn 18 May 6 Ivy 5 October
7 Birch 30 December 7 Hawthorn 19 May 7 Ivy 6 October
8 Birch 31 December 8 Hawthorn 20 May 8 Ivy 7 October
9 Birch 1 January 9 Hawthorn 21 May 9 Ivy 8 October
10 Birch 2 January 10 Hawthorn 22 May 10 Ivy 9 October
11 Birch 3 January 11 Hawthorn 23 May 11 Ivy 10 October
12 Birch 4 January 12 Hawthorn 24 May 12 Ivy 11 October
13 Birch 5 January 13 Hawthorn 25 May 13 Ivy 12 October
14 Birch 6 January 14 Hawthorn 26 May 14 Ivy 13 October
15 Birch 7 January 15 Hawthorn 27 May 15 Ivy 14 October
16 Birch 8 January 16 Hawthorn 28 May 16 Ivy 15 October
17 Birch 9 January 17 Hawthorn 29 May 17 Ivy 16 October
18 Birch 10 January 18 Hawthorn 30 May 18 Ivy 17 October
19 Birch 11 January 19 Hawthorn 31 May 19 Ivy 18 October
20 Birch 12 January 20 Hawthorn 1 June 20 Ivy 19 October
21 Birch 13 January 21 Hawthorn 2 June 21 Ivy 20 October
22 Birch 14 January 22 Hawthorn 3 June 22 Ivy 21 October
23 Birch 15 January 23 Hawthorn 4 June 23 Ivy 22 October
24 Birch 16 January 24 Hawthorn 5 June 24 Ivy 23 October
25 Birch 17 January 25 Hawthorn 6 June 25 Ivy 24 October
26 Birch 18 January 26 Hawthorn 7 June 26 Ivy 25 October
27 Birch 19 January 27 Hawthorn 8 June 27 Ivy 26 October
28 Birch 20 January 28 Hawthorn 9 June 28 Ivy 27 October
1 Rowan 21 January 1 Oak 10 June 1 Reed 28 October
2 Rowan 22 January 2 Oak 11 June 2 Reed 29 October
3 Rowan 23 January 3 Oak 12 June 3 Reed 30 October
4 Rowan 24 January 4 Oak 13 June 4 Reed 31 October
5 Rowan 25 January 5 Oak 14 June 5 Reed 1 November
6 Rowan 26 January 6 Oak 15 June 6 Reed 2 November
7 Rowan 27 January 7 Oak 16 June 7 Reed 3 November
8 Rowan 28 January 8 Oak 17 June 8 Reed 4 November
9 Rowan 29 January 9 Oak 18 June 9 Reed 5 November
10 Rowan 30 January 10 Oak 19 June 10 Reed 6 November
11 Rowan 31 January 11 Oak 20 June 11 Reed 7 November
12 Rowan 1 February 12 Oak 21 June 12 Reed 8 November
13 Rowan 2 February 13 Oak 22 June 13 Reed 9 November
14 Rowan 3 February 14 Oak 23 June 14 Reed 10 November
15 Rowan 4 February 15 Oak 24 June 15 Reed 11 November
16 Rowan 5 February 16 Oak 25 June 16 Reed 12 November
17 Rowan 6 February 17 Oak 26 June 17 Reed 13 November
18 Rowan 7 February 18 Oak 27 June 18 Reed 14 November
19 Rowan 8 February 19 Oak 28 June 19 Reed 15 November
20 Rowan 9 February 20 Oak 29 June 20 Reed 16 November
21 Rowan 10 February 21 Oak 30 June 21 Reed 17 November
22 Rowan 11 February 22 Oak 1 July 22 Reed 18 November
23 Rowan 12 February 23 Oak 2 July 23 Reed 19 November
24 Rowan 13 February 24 Oak 3 July 24 Reed 20 November
25 Rowan 14 February 25 Oak 4 July 25 Reed 21 November
26 Rowan 15 February 26 Oak 5 July 26 Reed 22 November
27 Rowan 16 February 27 Oak 6 July 27 Reed 23 November
28 Rowan 17 February 28 Oak 7 July 28 Reed 24 November
1 Ash 18 February 1 Holly 8 July 1 Elder 25 November
2 Ash 19 February 2 Holly 9 July 2 Elder 26 November
3 Ash 20 February 3 Holly 10 July 3 Elder 27 November
4 Ash 21 February 4 Holly 11 July 4 Elder 28 November
5 Ash 22 February 5 Holly 12 July 5 Elder 29 November
6 Ash 23 February 6 Holly 13 July 6 Elder 30 November
7 Ash 24 February 7 Holly 14 July 7 Elder 1 December
8 Ash 25 February 8 Holly 15 July 8 Elder 2 December
9 Ash 26 February 9 Holly 16 July 9 Elder 3 December
10 Ash 27 February 10 Holly 17 July 10 Elder 4 December
11 Ash 28 February 11 Holly 18 July 11 Elder 5 December
12 Ash 29 February 12 Holly 19 July 12 Elder 6 December
13 Ash 1 March 13 Holly 20 July 13 Elder 7 December
14 Ash 2 March 14 Holly 21 July 14 Elder 8 December
15 Ash 3 March 15 Holly 22 July 15 Elder 9 December
16 Ash 4 March 16 Holly 23 July 16 Elder 10 December
17 Ash 5 March 17 Holly 24 July 17 Elder 11 December
18 Ash 6 March 18 Holly 25 July 18 Elder 12 December
19 Ash 7 March 19 Holly 26 July 19 Elder 13 December
20 Ash 8 March 20 Holly 27 July 20 Elder 14 December
21 Ash 9 March 21 Holly 28 July 21 Elder 15 December
22 Ash 10 March 22 Holly 29 July 22 Elder 16 December
23 Ash 11 March 23 Holly 30 July 23 Elder 17 December
24 Ash 12 March 24 Holly 31 July 24 Elder 18 December
25 Ash 13 March 25 Holly 1 August 25 Elder 19 December
26 Ash 14 March 26 Holly 2 August 26 Elder 20 December
27 Ash 15 March 27 Holly 3 August 27 Elder 21 December
28 Ash 16 March 28 Holly 4 August 28 Elder 22 December
29 Ash 17 March 1 Hazel 5 August 29 Elder 23 December
1 Alder 18 March 2 Hazel 6 August
2 Alder 19 March 3 Hazel 7 August
3 Alder 20 March 4 Hazel 8 August
4 Alder 21 March 5 Hazel 9 August
5 Alder 22 March 6 Hazel 10 August
6 Alder 23 March 7 Hazel 11 August
7 Alder 24 March 8 Hazel 12 August
8 Alder 25 March 9 Hazel 13 August
9 Alder 26 March 10 Hazel 14 August
10 Alder 27 March 11 Hazel 15 August
11 Alder 28 March 12 Hazel 16 August
12 Alder 29 March 13 Hazel 17 August
13 Alder 30 March 14 Hazel 18 August
14 Alder 31 March 15 Hazel 19 August
15 Alder 1 April 16 Hazel 20 August
16 Alder 2 April 17 Hazel 21 August
17 Alder 3 April 18 Hazel 22 August
18 Alder 4 April 19 Hazel 23 August
19 Alder 5 April 20 Hazel 24 August
20 Alder 6 April 21 Hazel 25 August
21 Alder 7 April 22 Hazel 26 August
22 Alder 8 April 23 Hazel 27 August
23 Alder 9 April 24 Hazel 28 August
24 Alder 10 April 25 Hazel 29 August
25 Alder 11 April 26 Hazel 30 August
26 Alder 12 April 27 Hazel 31 August
27 Alder 13 April 28 Hazel 1 September
28 Alder 14 April 1 Bramble 2 September
1 Willow 15 April 2 Bramble 3 September
2 Willow 16 April 3 Bramble 4 September
3 Willow 17 April 4 Bramble 5 September
4 Willow 18 April 5 Bramble 6 September
5 Willow 19 April 6 Bramble 7 September
6 Willow 20 April 7 Bramble 8 September
7 Willow 21 April 8 Bramble 9 September
8 Willow 22 April 9 Bramble 10 September
9 Willow 23 April 10 Bramble 11 September
10 Willow 24 April 11 Bramble 12 September
11 Willow 25 April 12 Bramble 13 September
12 Willow 26 April 13 Bramble 14 September
13 Willow 27 April 14 Bramble 15 September
14 Willow 28 April 15 Bramble 16 September
15 Willow 29 April 16 Bramble 17 September
16 Willow 30 April 17 Bramble 18 September
17 Willow 1 May 18 Bramble 19 September
18 Willow 2 May 19 Bramble 20 September
19 Willow 3 May 20 Bramble 21 September
20 Willow 4 May 21 Bramble 22 September
21 Willow 5 May 22 Bramble 23 September
22 Willow 6 May 23 Bramble 24 September
23 Willow 7 May 24 Bramble 25 September
24 Willow 8 May 25 Bramble 26 September
25 Willow 9 May 26 Bramble 27 September
26 Willow 10 May 27 Bramble 28 September
27 Willow 11 May 28 Bramble 29 September
28 Willow 12 May