Good day guys & Happy New Year! I have an excel sheet with little bit of VBA code from it to hide and unhide columns https://drive.google.com/open?id=1ph...QPhkRkft2APTtl. The sheet works properly but when I added another column some days of the month was hidden too. Like for example month of February https://drive.google.com/open?id=1Qo...7rV2oXYGPjtjg6. Please can someone take a look at it and tell me what do it need to change in the formula? Thanks.