日期：first sunday of april
开始：。
这个节日在各国庆祝 (+1):
俄罗斯.Geologists Day在其他年份
| 开始日期 | |
|---|---|
| Geologists Day 2112 | |
| Geologists Day 2113 | |
| Geologists Day 2114 | |
| Geologists Day 2115 | |
| Geologists Day 2116 | |
| Geologists Day 2117 |
日期：first sunday of april
开始：。
| 开始日期 | |
|---|---|
| Geologists Day 2112 | |
| Geologists Day 2113 | |
| Geologists Day 2114 | |
| Geologists Day 2115 | |
| Geologists Day 2116 | |
| Geologists Day 2117 |