| Code | Place | Type | Author | Remark |
| 04-01 | Reijmerstok, L | Armillary | Eugène Roebroeck | Correction for equation of time |
| 04-02 | Schiedam | Vertical | Hendrik Hollander | |
| 04-03 | Nes aan de Amstel | Horizontal | Hendrik Hollander | |
| 04-04 | Delden en Dedemsvaart | Vertial and armillary | Gerrit Sasbrink | |
| 04-05 | Mun | Horizontal | Chris Doomernik | |
| 04-06 | A CD sundial | Hans de Rijk | ||
| 04-07 | Velsen | Vertical | Fer de Vries | Colourful sundial |
| 04-08 | Warffum | Armillary sphere | Fer de Vries | Queen's Birthday Celebration 2004 |
| 04-09 | Zoetermeer | Horizontal sundial | Hendrik Hollander | With constellations |
| 04-10 | Bilthoven | Horizontal sundial | Jaap van Dort | |
| 04-11 | Horizontal sundials | Dees Verschuuren | ||
| 04-12 | Montfoort | Horizontal sundail in a pond | Bote Holman | |