日期：last Sunday of May
开始：。
这个节日在各国庆祝 (+1):
俄罗斯.Chemist's Day在其他年份
| 开始日期 | |
|---|---|
| Chemist's Day 2040 | |
| Chemist's Day 2041 | |
| Chemist's Day 2042 | |
| Chemist's Day 2043 | |
| Chemist's Day 2044 | |
| Chemist's Day 2045 |
日期：last Sunday of May
开始：。
| 开始日期 | |
|---|---|
| Chemist's Day 2040 | |
| Chemist's Day 2041 | |
| Chemist's Day 2042 | |
| Chemist's Day 2043 | |
| Chemist's Day 2044 | |
| Chemist's Day 2045 |